!Trader Nestle:

The soldiers brought it here. They told me that they got the jewels during the fight with Turek Orcs. The northwest coast of Gludio is a place where the relics of Elmoraden empire are often found...

It is also written here in the account book! Three jewels of empirical style, purchased by *Leopold of the Black Lion Troop*. Ask him in person about the details. I think he lives near the rebuilding site of Gludin.